通用型高性能交流驱动器： AC650V系列 AC650V在AC650上进行了扩展，增加了无传感矢量控制。适用于需要提升负载变动下的速度调节和大惯量系统的高起动转矩需求应用。 离心泵 工业鼓风机 搅拌机 The AC690 series is a single range of AC drives designed to meet the requirements of all variable speed applications from simple single motor speed control through to the most sophisticated integrated multi-drive systems. The heart of the AC690 is a highly advanced 32-bit microprocessor based motor control model. This provides an exceptional dynamic performance platform to which can be added a host of communications and control options, enabling you to tailor the drives to meet your exact requirements. The AC690 is available in 380-500V 3-phase 0.75 to 1000kW and 220V-240V 0.75 to 55kW. Features The AC690 can be user configured for 3 different modes of operation : Open-loop (volts/frequency) control This mode is ideal for basic motor speed control, or multiple motors driven in parallel. The quick set-up menu and plain language display ensures the quickest and easiest, trouble free start up. Sensorless vector control High starting torque and tight speed regulation is provided by a sophisticated MRAS (Model Reference Adaptive System) motor control strategy. MRAS provides accurate speed simulation (without the need for any speed measuring transducer) by continually modelling the motor.